With this app you can backup and restore the TA partition of your device.
This can be useful, for example, when you want to unlock your bootloader and not lose your DRM keys and most importantly, your warranty. Before unlocking your bootloader, backup your TA with this app and you will be able to restore it to a factory state (locked bootloader, DRM keys intact, etc).
The app is based on TA Backup v9.10 by DevShaft (thanks !), which can be found here.
Frequently asked questions